Wet Brine — Equilibrium Brining (Precise Salt Percentage)

Wet brining is the immersion of meat, poultry, or fish in a salt-water solution to season it internally, improve moisture retention during cooking, and in some applications deliver aromatics throughout the protein. The science involves osmosis and diffusion: initially, water moves out of the meat into the higher-salinity brine; then, as salt diffuses inward, water follows, resulting in a net increase in moisture content and internal salt equilibration. Equilibrium brining is the precision approach that has replaced traditional 'percent by volume' brining for serious cooks. In traditional brining, excess salt was used and the brine time strictly controlled to avoid over-salting. Equilibrium brining instead calculates the exact desired salt percentage of the final product (typically 0.7–1.5% for poultry and pork, 1–2% for fish), adds that same percentage to the total weight of the meat plus water combined, and submerges the food. Because the brine and meat ultimately reach the same salt concentration, the product cannot be over-salted regardless of extended brining time — the equilibrium is the limit. Example calculation: 1 kg chicken breast + 1 kg water = 2 kg total. At 1% salt: 20g salt. Dissolve 20g salt in 1 kg water, submerge the chicken, and refrigerate 8–24 hours. The chicken will reach exactly 1% internal salt concentration. Beyond salt, wet brines can carry dissolved aromatics — bay leaves, peppercorns, citrus zest, herbs, sugar — though the amount of flavour penetration from aromatics is modest compared to salt, which moves actively by osmosis. Sugar at 25–50% of salt weight adds subtle sweetness and improves Maillard browning during subsequent searing. Brine temperatures must remain below 4°C at all times. Warm brining accelerates ion transfer but creates dangerous bacterial growth conditions and must only be used with immediate cooking.